Direct Writing of Metal Nanoparticles by Localized Plasma Electrochemical Reduction of Metal Cations in Polymer Films

2011 ◽  
Vol 21 (11) ◽  
pp. 2155-2161 ◽  
Author(s):  
Seung Whan Lee ◽  
Dong Liang ◽  
Xuan P. A. Gao ◽  
R. Mohan Sankaran
Keyword(s):  
Metal Nanoparticles ◽  
Electrochemical Reduction ◽  
Polymer Films ◽  
Metal Cations ◽  
Direct Writing

DNA Binding To Conducting Polymer Films

1991 ◽  
Vol 255 ◽  
Author(s):  
Jeong-Ok Lim ◽  
Daniel S. Minehan ◽  
M. Kamath ◽  
Kenneth A. Marx ◽  
Sukant K. Tripathy
Keyword(s):  
Dna Binding ◽  
Electrochemical Reduction ◽  
Conducting Polymer ◽  
Polymer Films ◽  
Electrostatic Interactions ◽  
Positive Charge ◽  
Chemical Methods ◽  
Diffusion Limited ◽  
Conducting Polymer Films ◽  
Solution Uptake

AbstractThe polycation conducting polymers, oxidized polypyrrole and polyalkylthiophene, possess the ability to form complexes with polyanionic DNA molecules through largely electrostatic interactions. This study demonstrated the solution uptake and binding of 32p radiolabeled DNA by conducting polymer thick films (50–100μm). Polypyrrole (PPy) was synthesized by electrochemical methods and poly(3-hexylthiophene) (PHT) and poly(3-undecylthiophene) (PUT) were synthesized by chemical methods. The DNA binding rates on PPy films were affected by DNA concentration and the oxidation state (measured as conductivity). The DNA kinetics support a diffusion limited model for binding. We measured DNA binding levels onto all three polymer films; PUT, PHT, and PPy. The binding levels increased in the same order as the conductivities of the polymer films. DNA binding onto oxidized PPy film was diminished upon electrochemical reduction. These observations showed, therefore, the binding may be linked with the positive charge sites responsible for conduction in the polymer films.

scholarly journals Promoter Effects of Alkali Metal Cations on the Electrochemical Reduction of Carbon Dioxide

2017 ◽  
Vol 139 (32) ◽  
pp. 11277-11287 ◽  
Author(s):  
Joaquin Resasco ◽  
Leanne D. Chen ◽  
Ezra Clark ◽  
Charlie Tsai ◽  
Christopher Hahn ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Alkali Metal ◽  
Electrochemical Reduction ◽  
Metal Cations ◽  
Alkali Metal Cations ◽  
Promoter Effects

Fabrication of Electrically Conductive Metal Patterns at the Surface of Polymer Films by Microplasma-Based Direct Writing

2014 ◽  
Vol 6 (5) ◽  
pp. 3099-3104 ◽  
Author(s):  
Souvik Ghosh ◽  
Rui Yang ◽  
Michelle Kaumeyer ◽  
Christian A. Zorman ◽  
Stuart J. Rowan ◽  
...  
Keyword(s):  
Polymer Films ◽  
Direct Writing ◽  
Electrically Conductive

Ultrafast, scalable laser photothermal synthesis and writing of uniformly dispersed metal nanoclusters in polymer films

Nanoscale ◽  
2019 ◽  
Vol 11 (28) ◽  
pp. 13354-13365 ◽  
Author(s):  
Pankaj Ghildiyal ◽  
Yong Yang ◽  
Dylan J. Kline ◽  
Scott Holdren ◽  
Michael R. Zachariah
Keyword(s):  
Metal Nanoparticles ◽  
Polymer Films ◽  
Metal Nanoclusters ◽  
High Concentration ◽  
Laser Synthesis

This paper presents a fast CO2 laser synthesis and writing technique – laser photothermal synthesis and writing (LPSW) – to generate and write a high concentration of unaggregated, spherical sub-10 nm metal nanoparticles (sMNPs).

Ultra high resolution, low temperature, direct metal patterning by selective laser processing of solution deposited metal nanoparticles

2010 ◽  
Vol 1247 ◽  
Author(s):  
Seung H. Ko ◽  
Dong Yeol Yang ◽  
Heng Pan ◽  
Jean M. Frechet ◽  
Yong Son ◽  
...  
Keyword(s):  
High Resolution ◽  
Low Temperature ◽  
Metal Nanoparticles ◽  
Flexible Electronics ◽  
Laser Processing ◽  
Temperature Drop ◽  
Conductive Heat ◽  
Direct Writing ◽  
Large Area ◽  
Deposited Metal

AbstractAll-printed electronics is the key technology to ultra-low-cost, large-area electronics. As a critical step in this direction, we demonstrate that femtosecond laser processing (sintering and ablation) of solution deposited metal nanoparticles enables direct metal patterning at low-temperature with ultra high resolution (∼300nm) to overcome the resolution limitation of the current inkjet direct writing processes.This could be explained by the combined effects of novel properties of metal nanoparticles such as melting temperature drop, strong absorption of the incident laser beam at surface plasmon mode, lower conductive heat transfer loss, and the relatively weak bonding between nanoparticles. Local thermal control of the laser sintering process could minimize the heat-affected zone and the thermal damage to the substrate and further enhance the resolution of the process. This local nanoparticle deposition and energy coupling enable an environmentally friendly and cost-effective process as well as a low-temperature manufacturing sequence to realize large-area, flexible electronics on polymer substrates.

scholarly journals Laser Ablation Direct Writing of Metal Nanoparticles for Hydrogen and Humidity Sensors

Langmuir ◽  
2011 ◽  
Vol 27 (3) ◽  
pp. 1241-1244 ◽  
Author(s):  
Michail J. Beliatis ◽  
Nicholas A. Martin ◽  
Edward J. Leming ◽  
S. Ravi P. Silva ◽  
Simon J. Henley
Keyword(s):  
Laser Ablation ◽  
Metal Nanoparticles ◽  
Direct Writing ◽  
Humidity Sensors
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